4.5mm Opal Polycarbonate Sheet UV 600 X 400 Skylight Windows Difuser | eBay
Double Wall Panels, Polycarbonate Hollow Plates, Double Wall for Garden, Greenhouse and Model Making, Weatherproof and Translucent, 60.5 x 121 cm (Thickness 4.5 mm). : Amazon.com.be: Garden
0.177" (4.5mm) x 24" x 48" Clear LEXAN™ 9034 Polycarbonate Sheet | U.S. Plastic Corp.
Clear Polycarbonate Panels 4mm/4.5 Mm/10 Mm Sunshine Board For Cover Greenhouse,geodesic Dome,clear Construction Projec Material - Decorative Boards - AliExpress
Clear Polycarbonate Panels 4mm/4.5 Mm/10 Mm Sunshine Board For Cover Greenhouse,geodesic Dome,clear Construction Projec Material - Decorative Boards - AliExpress